19447+4456 DA 13 AB (HD 186816)
19h 44m 44.02s +44° 55' 44.0" P.A. 274.00 sep 2.0 mag 7.42,11.60 Sp K0
| Coord 2000 | 19447+4456 | Discov num | DA 13 | Comp | AB | Coord arcsec 2000 | 19 44 44.02 +44 55 44.0 | ||||
| Date first | 1859 | Date last | 2018 | Obs | 16 | ||||||
| Pa first | 266 | Pa last | 273.8 | P.A. Now (θ) | 273.8° | ||||||
| Sep first | 2.3 | Sep last | 2.03 | Sep. Now (ρ) | 2.03" | ||||||
| Mag pri | 7.42 | Mag sec | 11.60 | delta mag (ΔM) | 4.18 | Spectral class | K0 (yellow-orange) | ||||
| Pri motion ra | +033 | Sec motion ra | |||||||||
| Pri motion dec | +017 | Sec motion dec | |||||||||
| Notes | |||||||||||
19447+4456 SYSTEM COMPONENTS
| Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
| Show | HD 186816 | 48791 | 19 44 44 +44 55 44 | DA 13 AB | 2018 | 16 | 274 | 2.0 | 7.42 | 11.60 | 4.18 | <=== | |
| Show | 48791 | 19 44 44 +44 55 44 | DA 13 AC | 2015 | 8 | 288 | 155.3 | 7.42 | 11.98 | 4.56 |
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name | HD 186816 | Constellation | Cygnus | SAO | 48791 | Tycho2 | 3148-00881-1 | ||||
| Gaia DR2 | 2079759336670805376 | HD | 186816 |
WDS 19447+4456 DA 13 AB (HD 186816) : NOTES
REFERENCES
| refcode | metd | author | reference |
| Da_1831 | Ma j | Dawes, W.R. | 1831MNRAS...2...34D |
| Da_1831 | MNRAS 2, 34, 1831 | ||
| Da_1835 | Ma - | Dawes, W.R. | 1835MmRAS...8...61D |
| Da_1835 | MemRAS 8, 61, 1835 | ||
| Da_1840 | Ma - | Dawes, W.R. | 1840MNRAS...5...61D |
| Da_1840 | MNRAS 5, 61, 1840 | ||
| Da_1844A | Ma - | Dawes, W.R. | 1844QB43.S66....... |
| Da_1844A | cited by Smyth (Cycle of Celestial Objects 2, 1844) | ||
| Da_1848 | Ma - | Dawes, W.R. | 1848MNRAS...8...53D |
| Da_1848 | MNRAS 8, 53, 1848 | ||
| Da_1850 | - | Dawes, W.R. | 1850MNRAS..10..174D |
| Da_1850 | MNRAS 10, 174, 1850 | ||
| Da_1851 | Ma - | Dawes, W.R. | 1851MmRAS..19..191D |
| Da_1851 | +Mb | MemRAS 19, 191, 1851 | |
| Da_1852 | Ma - | Dawes, W.R. | . |
| Da_1852 | Bishop Obs. Astron. Observations 1852 (most data published in Da_1867) | 1867MmRAS..35..137D | |
| Da_1855 | - | Dawes, W.R. | 1855MNRAS..15..189D |
| Da_1855 | MNRAS 15, 189, 1855 | ||
| Da_1857 | Ma - | Dawes, W.R. | 1857MNRAS..17..257C |
| Da_1857 | MNRAS 17, 257, 1857 | ||
| Da_1858 | - | Dawes, W.R. | 1858MNRAS..18...58D |
| Da_1858 | MNRAS 18, 58, 1858 | ||
| Da_1859 | Ma - | Dawes, W.R. | 1859MNRAS..20...55C |
| Da_1859 | MNRAS 20, 55, 1859 | ||
| Da_1862 | Ma - | Dawes, W.R. | 1862MNRAS..23...34D |
| Da_1862 | MNRAS 23, 34, 1862 | ||
| Da_1864a | Ma j | Dawes, W.R. | 1864MNRAS..24..144D |
| Da_1864a | MNRAS 24, 144, 1864 | ||
| Da_1864b | - | Dawes, W.R. | 1864MNRAS..24..117D |
| Da_1864b | MNRAS 24, 117, 1864 | ||
| Da_1864c | - | Dawes, W.R. | 1864MNRAS..24..196D |
| Da_1864c | MNRAS 24, 196, 1864 | ||
| Da_1867 | Ma j | Dawes, W.R. | 1867MmRAS..35..137D |
| Da_1867 | MemRAS 35, 137, 1867 | ||
| Da_1875A | Ma - | Dawes, W.R. | 1875AN.....85..323D |
| Da_1875A | cited by Doberck, 1875 (see Dob1875b,f,g,h) | ||
| Da_1879A | Ma - | Dawes, W.R. | 1879Obs.....3..200G |
| Da_1879A | cited by Gledhill (Obs 3, 200, 1879) | ||
| Da_1905A | Ma - | Dawes, W.R. | 1905LicOB...3..147A |
| Da_1905A | cited by Aitken (Lick Obs. Bull. 3, 147, 1905) | ||
| Da_1906A | Ma - | Dawes, W.R. | 1906MmRAS..56....1L |
| Da_1906A | cited by Lewis (MemRAS 56, 1, 1906) | ||
| Da_1913A | Ma - | Dawes, W.R. | 1913QB811.B8....... |
| Da_1913A | cited by Burnham (Carnegie Inst. Wash. #168, 1913) | ||
| Da_1937A | Ma - | Dawes, W.R. | 1937AnLei..18....1S |
| Da_1937A | cited by Strand (Ann. Sterrew. Leiden 18, 1937) |
WDS HISTORIC DATA
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 19447+4456 | DA 13 | AB | 1946 | 13 | 272 | 1.8 | 7.42 | 11.60 | K0 | 194444.02+445544.0 | |
| 19447+4456 | DA 13 | AB | 2015 | 14 | 273 | 2.0 | 7.42 | 11.60 | K0 | 194444.02+445544.0 | |
| 19447+4456 | DA 13 | AB | 2018 | 15 | 274 | 2.0 | 7.42 | 11.60 | K0 | 194444.02+445544.0 |
If you need more information about this double, apply for a data request form to the WDS.
WDS 19447+4456 DA 13 AB (HD 186816) : VISUAL OBSERVATIONS REPORTS
WDS 19447+4456 DA 13 AB (HD 186816) : MEASURES
WDS 19447+4456 (HD 186816) : VIRTUAL EYEPIECE
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WDS 19447+4456 (HD 186816) : ALADIN DSS IMAGE @
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